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1992 (1)
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1Author    Z. NaturforschRequires cookie*
 Title    Phosphinocyclopentadienid via Cyclopentadienylphosphid  
 Abstract    Lithiumorganyls RLi (R = Me, Bu, Ph) add to (P hP)5 in successive degradation and dispropor-tionation equilibria depending on the ratio of the reactants. A t —70 °C (R = Me) disproportiona-tion is blocked and (PhP)4R ' and (PhP),R~ can be detected. With excess RLi m onophosphides P hP R -are formed. CpNa with the help of a crown ether degrades (PhP)5 or substitutes cyanide from PhPCN^ to give an equilibrium mixture of (PhP)"Cp~ anions, which stabilize by proton shifts: In case of n = 1 and 2 a shift from the Cp unit to the terminal phosphorus results in the form ation of the phenyl-phosphino-and diphenyldiphosphino-cyclopentadienide anion, in case of n = 3 two proton shifts within the Cp unit result in a cyclopenteno-l,2,3-triphospholene allylic anion. 
  Reference    Z. Naturforsch. 42b, 977—983 (1987); eingegangen am 21. April 1987 
  Published    1987 
  Keywords    Cyclophosphane, Cyclopentadienide, Nucleophilic D egradation, 31P N M R Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0977.pdf 
 Identifier    ZNB-1987-42b-0977 
 Volume    42 
2Author    HansPeter Baldus, Roger BlachnikRequires cookie*
 Title    Neue A4B3-Moleküle: P 3SbS3, P4S 2Te und P4STe2 New A4B3 Molecules: P3SbS3, P4S2Te and P4STe2  
 Abstract    The new molecules P3SbS3, P4S2Te und P4STe2 were extracted with CS2 from mixtures o f S. Sb and P4S3, and P, S and Te samples respectively, which were previously molten and then an­ nealed for several days. In the P3SbS3 m olecules the apical phosphorus position o f P4S3 is sub­ stituted by antimony. In the molecules P4STe2 and P4S2Te one or two o f the sulphur bridges are substituted by tellurium. X-ray and 31P N M R data o f the com pounds are given. 
  Reference    Z. Naturforsch. 45b, 1605—1609 (1990); eingegangen am 9. April 1990 
  Published    1990 
  Keywords    31P N M R Spectra, Phosphorus Antim ony Sulphide, Phosphorus Sulphide Telluride, Lattice Parameters o f P3SbS3 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1605.pdf 
 Identifier    ZNB-1990-45b-1605 
 Volume    45 
3Author    Joseph Grobe, Anita Krummen, Bernt Krebs, Mechtild LägeRequires cookie*
 Title    Alternativ-Liganden XXVIII [1]  
 Abstract    Neue Komplexe M (CO)4L mit Dipodliganden des Typs R2M (O C H 2PM e2)*(CH2CH2PM e2)2_x (M = Cr, M o, W; M = Si, Ge; R = M e, Ph; x = 0 -2) Alternative Ligands XXVIII [1] Novel Complexes M (CO)4L with Dipod Ligands of the Type R2M '(O C H 2PM e2)v(C H 2C H 2PM e2)2_x (M = Cr, Mo, W; M' = Si, Ge; R -Me, Ph; jc = 0 -2) The coordinating properties o f dipod ligands o f the type R2M (O C H 2PM e2)T (CH 2CH 2PM e2)2_r (R = Me, Ph; M' = Si, Ge; x = 0 -2) have been investigated by the preparation o f the novel rä-M (C O)4L complexes (M = Cr, M o, W). They are obtained under mild conditions in cyclo­ hexane or «-hexane solution by the reaction o f the norbornadiene precursors M (CO)4N B D with the corresponding ligands. In case o f the Ge containing ligands the dilution principle was used to improve the yields o f the mononuclear derivatives. The rate o f the N B D replacement is mainly determined by the central atom M (M o > W > Cr) and only little by R, M' or x . The new com pounds have been characterized by analytical (C, H) and spectroscopic investigations ('H, 3IP N M R , IR, MS). The ligand properties are discussed on the basis o f spectroscopic data (in particular coordination effects) and the molecular structure o f the complexes Cr(CO)4[Ph2Si(OCH 2PM e2)2] (12) and M o(CO)4[Me2G e(C H 2C H 2PM e2)2] (28) obtained by X-ray diffraction studies. 
  Reference    Z. Naturforsch. 47b, 310 (1992); eingegangen am 5. August 1991 
  Published    1992 
  Keywords    D ipod Phosphane Ligands, 'H N M R Spectra, 31P N M R Spectra, X -R ay 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0310.pdf 
 Identifier    ZNB-1992-47b-0310 
 Volume    47